GWD24-3

meckychen · 发表于 2010-1-11 22:02:20

3

in a certain game played with red chips and blue chips, each red chip has a point value of X and each blue chip has a point value of Y, where X>Y and X and Y are positive integers. If a player has 5 red chips and 3 blue chips, what is the average (arithmetic mean ) point value of the 8 chips that the player has?

(1) The average point value of one red chip and one blue chip is 5.

(2) The average point value of the 8 chips that the player has is an integer.

The answer is C, how to analyze? Thank you.

meckychen · 发表于 2010-1-12 14:17:40

Thank you

naiad1981 · 发表于 2010-1-12 15:47:46

这题我怎么觉得是E,

起码有两组数符合

1. R point is 9 and B point is 1

2. Both R and B are 5

小羽羽 · 发表于 2010-12-10 10:21:22

where X>Y，thus，R cannot be equal to B

GWD24-3

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